Ronstan Series 30 Orbit Block, Single with Becket and Swivel Shackle, RF35100

The Ronstan Series 30 Orbit Block is a single-sheave block designed for performance sailing, featuring a high strength-to-weight ratio and a low-friction 2-stage ball bearing system. Its construction utilizes glass fiber-reinforced nylon cheeks and a high-compression carbon black acetal sheave for consistent performance.

Key Features:

• Compact, low-profile design with an ultra-low profile thru-sheave becket
• 2-stage ball bearing system for efficient operation across the full load range
• Lightweight, durable composite construction
• Versatile swivel shackle head for secure attachment

Specifications:

• Model: RF35100
• Sheave Diameter: 30mm (1-3/16 in.)
• Maximum Rope Diameter: 8mm (5/16 in.)
• Maximum Working Load: 300kg (660 lbs.)
• Breaking Load: 600kg (1,320 lbs.)
• Weight: 32g (1.1 oz.)
• Materials: Carbon black Acetal sheave, Acetal ball bearings, glass fiber reinforced Nylon frame, and SK75 Dyneema link

Applications:

• Mainsheet and spinnaker sheet systems on dinghies up to 5m (16 ft.)
• Halyard, vang, and backstay applications on boats up to 5m (16 ft.)
• Control line applications on larger yachts